Brochure 1 - Waitomo District Council

A Guide to Trade Waste in the Motor Vehicle Industry
Waitomo District Council manages the
wastewater system so that liquid waste
from residential, commercial and industrial
premises can be safely transported,
treated and disposed of.
Trade Waste is defined as any liquid that is
discharged to the wastewater system from
commercial, industrial, manufacturing
or trade premises resulting from any
process or operations. This may include
condensing or cooling waters, stormwater
which cannot be practically separated or
domestic sewage.
Although the amount of waste from any single motor
vehicle business may be relatively small, the effect of
the total amount of waste being discharged from the
motor vehicle industry is very significant.
Pre-treatment
The main types of pre-treatment used in dealing with
oily waste are oil and grit interceptors, dry basket
arrestors, diversion valves, bunding and roofing of
wash areas. Wastewater from toilets, showers and
other processes that generate Trade Waste must not
be directed through the pre-treatment equipment.
All pre-treatment equipment must be approved by
the Waitomo District Council prior to being installed
and must also be installed in accordance with the
standards set out in the New Zealand Building Code.
Managing Oily Trade Waste
Our People, Our Place, Our Future
Motor vehicle businesses within the
Waitomo District produce harmful liquid
waste pollutants such as petroleum,
hydrocarbons, flammable substances,
metals from engine parts and batteries,
chlorinated solvents, phenols, oils and
solids.
These substances are produced every
day simply by carrying out normal
operations. If that waste is discharged
directly into our wastewater system it
can affect the health of people working
in the wastewater system, damage the
pipes and the wastewater treatment
plant, potentially cause explosions and
could result in pollution of our rivers.
Who is Affected?
All businesses that handle vehicles, machinery or
mechanical equipment and discharge to the wastewater
system will need to apply to the Waitomo District
Council for a Trade Waste Consent.
Businesses that may be affected include:
• Auto dismantlers
• Engine reconditioners
• Mechanical workshops
• Panelbeaters
• Radiator repairers
• Service stations
• Spray painters
• Vehicle, hire equipment and machinery washes.
Maintaining your Pre-treatment
All pre-treatment equipment requires maintenance
to ensure it operates effectively and efficiently. It
is important to know what type of pre-treatment you
have, where it is located, how it operates and what
maintenance is required. All pre-treatment should
be operated and maintained according to the manufacturer’s
instructions. Your Trade Waste Consent
will contain the minimum requirements specific to
your premises and type of pre-treatment.
www.waitomo.govt.nz
0800 WDC Help
(0800 932 4357)
Email: waitomodc@waitomo.govt.nz

Dealing with Used Chemicals, Oils,
Fuels, Fluids and Batteries
All used chemicals, oils, fuels or fluids generated
must be collected and stored in containers or
drums fro collection by Waitomo District Council
approved recyclers. Batteries should be stored in
bunded areas and removed offsite for recycling as
soon as possible.
Oil and grit interceptors cannot process large
amounts of liquids and chemicals such as oil,
petrol, kerosene, radiator fluids, non quick-break
degreasers and solvents.
Do not pour any of these wastes down the drain.
Trade Waste Tips That Can Save You Money
Save Water:
• Use dry or waterless cleaning methods such as
wiping or sweeping up spills
• Turn off taps if they are not being used.
Recycle:
• Collect used chemicals, oils, fuels, fluids and
batteries so that they can be recycled
• Never pour oils, brake fluid, radiator fluid or
fuels down any sinks or drains. It is an offence
to pour any waste into a stormwater drain and
you may be liable for a fine.
Use Appropriate Cleaning Products:
• Traditional cleaning compounds such as solvent
based degreasers create an oil-water suspension
that lasts for several hours allowing oil to
pass through the pre-treatment equipment and
into the wastewater system. Ask your cleaning
product supplier to specify a cleaner that allows
the oil and water to separate soon after use.
These products are known as “quick break”
detergents.
• Pre-treated wastewater should be clear. Milky
wastewater from you pre-treatment equipment
indicates the presence of emulsified oil. If this
occurs you may require a better quick break
detergent.
• When using cleaning product only use the specified
amount. Using more only wastes product
and increases operating costs.
Our People, Our Place, Our Future
A Guide to
Trade Waste
in the
Motor Vehicle
Industry
Need To Know More?
Waitomo District Council manages the
wastewater system so that liquid waste
from residential, commercial and industrial
premises can be safely transported, treated
and disposed of.
For more detailed information regarding Trade Waste
contact the Waitomo District Council on 0800 932
4357 and ask for the Trade Waste Officer.
You will find the Trade Waste Bylaw on the Waitomo
District Council website www.waitomo.govt.nz